The man, whose name has not been released, was rushed to a nearby hospital. He lost a lot of blood but he recovered from his wounds.

Crowder said the man told investigators he had been at a nearby Metro bus stop on Brazos when two men in a car, possibly a gold Buick La Sabre or Park Avenue, pulled up beside him. The passenger got, brandished a knife and forced the man to get into the car.

They drove to a house where the driver obtained crack cocaine, Crowder said. The driver got back into the car and smoked the drugs. Then the pair drove the man to the bank and ordered him to use his debit car at the ATM to withdraw cash.

The man got out of the car and walked to the ATM. But to trick the robbers, Crowder said, he used a different card that would not be accepted by the ATM. He told the men the card didn't work and he couldn't get any money.

Police said the passenger tried to take the man's wallet, but the man fought back against him. Then the suspect stabbed the man twice in his side. Witnesses heard the suspect yelling that he was going to kill the man.

The suspects sped away after the stabbing.

The victim crawled about 50 feet from the parking lot to the street, where Crowder spotted him and stopped to help.

Crowder said the victim told investigators he had recently been homeless before the stabbing. He said he recognized his attacker as a man he had often seen outside homeless shelters downtown.

Crowder said he doesn't think the suspect is homeless but probably tries to sell drugs to people who stay in the shelters. He said other people may recognize the man and could help police identify him.

The victim did not appear to have any connection to the suspect's possible drug activity, Crowder said. He had been trying to get his life back on track and was attending church.

"He was just simply in the wrong place at the wrong time," Crowder said.

The bank's surveillance camera recorded the suspect's image.

Anyone with information about the case is urged to contact the Houston Police Department at 713 247-4400 or Crime Stoppers at 713 222-TIPS.